Not sure, but the “nickel” set probably means the key material is nickel silver (a.k.a. electrum), not nickel-plated brass. It is more durable. E.g. Best keys and key pins are made of nickel silver for durability in commercial environments. Would make sense for bump keys too.

Bump keys should be stripped from shop shelves now! All it takes is one madman to use these to convert their semi automatic keys into machine keys, causing nothing but misery and pain to poor innocent locks just trying to enjoy a night listening to the doors. End the pain now before the next tragedy happens.

Recent Reviews

The LockLab

The LockLab Tribe consists of engineers, artists, mechanics, fast food workers, car wash attendants, office workers, and others from all walks of life. Some are thinkers and idea guys, while other are hands-on tinkerers, but our combined knowledge is an incubator of ideas that produces results that are greater than its parts. Together we can figure out any lock puzzle and find ways to improve it. Together we can make the world more secure. Together we are: The LockLab Tribe!